source: thirdparty/SZ/sz/src/DynamicByteArray.c @ 2c47b73

/**
 *  @file DynamicByteArray.c
 *  @author Sheng Di
 *  @date May, 2016
 *  @brief Dynamic Byte Array
 *  (C) 2015 by Mathematics and Computer Science (MCS), Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

#include <stdlib.h> 
#include <stdio.h>
#include <string.h>
#include "DynamicByteArray.h"

void new_DBA(DynamicByteArray **dba, size_t cap) {
                *dba = (DynamicByteArray *)malloc(sizeof(DynamicByteArray));
        (*dba)->size = 0;
        (*dba)->capacity = cap;
        (*dba)->array = (unsigned char*)malloc(sizeof(unsigned char)*cap);
    }

void convertDBAtoBytes(DynamicByteArray *dba, unsigned char** bytes)
{
        size_t size = dba->size;
        if(size>0)
                *bytes = (unsigned char*)malloc(size * sizeof(unsigned char));
        else
                *bytes = NULL;
        memcpy(*bytes, dba->array, size*sizeof(unsigned char)); 
}

void free_DBA(DynamicByteArray *dba)
{
        free(dba->array);
        free(dba);
}

unsigned char getDBA_Data(DynamicByteArray *dba, size_t pos)
{
        if(pos>=dba->size)
        {
                printf("Error: wrong position of DBA (impossible case unless bugs elsewhere in the code?).\n");
                exit(0);
        }
        return dba->array[pos];
}

void addDBA_Data(DynamicByteArray *dba, unsigned char value)
{
        if(dba->size==dba->capacity)
        {
                dba->capacity = dba->capacity << 1;
                dba->array = (unsigned char *)realloc(dba->array, dba->capacity*sizeof(unsigned char));
        }
        dba->array[dba->size] = value;
        dba->size ++;
}

void memcpyDBA_Data(DynamicByteArray *dba, unsigned char* data, size_t length)
{
        if(dba->size + length > dba->capacity)
        {
                dba->capacity = dba->size + length;
                dba->array = (unsigned char *)realloc(dba->array, dba->capacity*sizeof(unsigned char));
        }
        memcpy(&(dba->array[dba->size]), data, length);
        dba->size += length;
}